BOLD MAGENTA part numbers are new for 2025 PISTON & PISTON KITS PARTS-UNLIMITED.COM ATV/UTV | 2025 PISTON & PISTON KITS 1093 CYLINDER KITS FITS MODEL DESCRIPTION COMPRESSION RATIO PART # ARCTIC CAT DVX400 04-08 (all) Standard bore kit (90 mm) 11.3:1 0931-0842 Standard bore high-compression cylinder kit (90 mm) 13.5:1 0931-0843 +4 mm big bore 434cc kit 11.3:1 0931-0135 HONDA TRX450ER 06-14/TRX450R 06-09 Standard bore kit (96 mm) 12:1 0931-0285 +3 mm big bore 477cc kit 12:1 0931-0175 TRX450R 04-05 Standard bore kit (94mm) 10.5:1 0931-0284 Standard bore high-compression cylinder kit (94 mm) 13.1:1 0931-0301 +3 mm big bore 479cc kit 10.5:1 0931-0133 TRX700X 08-09 Standard bore kit (102 mm) 10:1 0931-0331 +3 mm big bore 727cc kit 10:1 0931-0332 KAWASAKI KFX400 03-06 Standard bore kit (90 mm) 11.3:1 0931-0842 Standard bore high-compression cylinder kit (90mm) 13.5:1 0931-0843 +4 mm big bore, (94 mm) 434cc kit 11.3:1 0931-0135 Brute Force 750 05-14,Teryx 750 08-13 Standard bore kit, front (85 mm) 8.8:1 0931-0507 Standard bore kit, rear (85 mm) 8.8:1 0931-0508 +6mm big bore (91 mm), 860cc front/rear kit 9:1 0931-05042 Brute Force 750 15-23 Standard bore kit, front (85 mm) 9.3:1 0931-0609 Standard bore kit, rear (85 mm) 9.3:1 0931-0611 +6 mm big bore (91 mm), 860cc front/rear kit 9.2:1 0931-0613 CYLINDERS AND CYLINDER KITS continued on next page. M-SPEC BIG BORE KIT REPLACEMENT PARTS FITS MODEL CYL. PART # PISTON PART # GASKET PART # POLARIS 570 +5 MM BIG BORE KIT ACE 570 15-19 - 0910-5025 0934-5869 Ranger 570, Crew 570 14-19 - 0910-5025 0934-5869 RZR 570 12-19 - 0910-5025 0934-5869 Sportsman 570 14-19 - 0910-5025 0934-5869 Sportsman Touring 570, X2 570 15-19 - 0910-5025 0934-5869 FITS MODEL CYL. PART # PISTON PART # GASKET PART # POLARIS 1000 +5 MM BIG BORE KIT General 1000 16 0931-0704 0910-5034 - RZR S 1000 16 0931-0704 0910-5034 - RZR XP 1000, RZR XP 4 1000 14-16 0931-0704 0910-5034 - 0931-0704 0934-5869 M-SPEC BIG BORE KITS (CONT) CYLINDERS AND CYLINDER KITS • Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders •Three kit options to choose from: Standard Bore, Standard Bore high-compression and Big Bore • Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise •Nickel Silicon Carbide-plated for long life •Kits come complete with gaskets, cylinder, piston, rings, pin and clips •Big bore cylinders do not require machine work (unless noted) • Replacement Vertex piston, rings, clips and pins also available; see pages 1081-1085 •Made in the U.S.A. 2 May require case boring.
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